Topic: Leak at Gas Gauge sending unit Flange, '51 F-1


51f1    -- 05-29-2014 @ 12:43 PM
  This may be useful to someone:

Sometime ago, I asked a question in this forum about a fuel leak that I couldn't stop at the gas gauge sending unit flange and fuel tank. Someone suggested that the screws I was using were too long. (It had never occurred to me that there were bottoms in the tank screw holes. Well, there are.) My problem was not that the screws were too long but that I hadn't used lock washers. When I added the lock washers, the screws no longer bottomed out, and the leak stopped.

I was always careful to use the right screws, etc., when I restored my truck, but, somehow I had overlooked the lock washers. I looked up the gauge in my parts book, and they were listed along with the screws and the flat washers.

Richard

This message was edited by 51f1 on 7-3-14 @ 9:07 AM


TomO    -- 05-30-2014 @ 7:15 AM
  Glad that you fixed you leak, it would be a disaster to see that nice truck go up in flames.

The reason that the screws do not go through into the tank is to prevent the leaking problem.

Tom


fla48    -- 05-30-2014 @ 6:45 PM
  It seems like it is always the easy things that seem to stump us. What would we do if everything went perfect? With my luck, I probably have tried to add more gaskets instead of figuring out the real cause which would lead to other problems. Nice find.


lazy69ranch    -- 05-30-2014 @ 8:00 PM
  Thanks for sharing this, Richard. I remember your original post and your solution will undoubtedly be of value to many of us that have been living with the smell of gasoline in the cab thinking it is normal.

Dan


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